From 28d553a3f16af230e354921b4527f1a4bce8cc97 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tom=C3=A1s=20Gr=C3=BCner?=
 <47506558+MegaRedHand@users.noreply.github.com>
Date: Tue, 28 Jul 2026 10:52:24 -0300
Subject: [PATCH 1/2] build: bump Rust toolchain to 1.97.1

The pin had drifted five releases behind upstream stable. Moving to
1.97.1 (released 2026-07-14) picks up compiler and clippy fixes and
keeps the MSRV aligned with the toolchain we actually build with.

Updates every real pin: the toolchain channel, the workspace MSRV, the
Docker builder base image, and the three CI toolchain declarations.
flake.nix and preview-config.nix derive their toolchain from
rust-toolchain.toml, so they follow automatically; the mdbook workflow
stays on `stable` since it only needs cargo to install mdbook-linkcheck2.

The `rustc-v1.92.0` in the node-identity test and the `rustc-v1.85.0` in
docs/rpc.md are illustrative sentinels, not pins, and are left alone.
---
 .github/actions/run-fixture-tests/action.yml | 2 +-
 .github/workflows/ci.yml                     | 2 +-
 .github/workflows/daily_loc_report.yml       | 2 +-
 CLAUDE.md                                    | 2 +-
 Cargo.toml                                   | 2 +-
 Dockerfile                                   | 2 +-
 rust-toolchain.toml                          | 2 +-
 7 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/.github/actions/run-fixture-tests/action.yml b/.github/actions/run-fixture-tests/action.yml
index 61de7e6e..5d8c8117 100644
--- a/.github/actions/run-fixture-tests/action.yml
+++ b/.github/actions/run-fixture-tests/action.yml
@@ -104,7 +104,7 @@ runs:
     - name: Setup Rust
       uses: dtolnay/rust-toolchain@master
       with:
-        toolchain: "1.92.0"
+        toolchain: "1.97.1"
 
     - name: Setup cache
       uses: Swatinem/rust-cache@v2
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8ad3a688..953b9910 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,7 +26,7 @@ jobs:
       - name: Setup Rust
         uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: "1.92.0"
+          toolchain: "1.97.1"
           components: rustfmt, clippy
 
       - name: Setup cache
diff --git a/.github/workflows/daily_loc_report.yml b/.github/workflows/daily_loc_report.yml
index 0df914d2..c7ddf52c 100644
--- a/.github/workflows/daily_loc_report.yml
+++ b/.github/workflows/daily_loc_report.yml
@@ -39,7 +39,7 @@ jobs:
       - name: Setup Rust
         uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: "1.92.0"
+          toolchain: "1.97.1"
 
       - name: Setup cache
         uses: Swatinem/rust-cache@v2
diff --git a/CLAUDE.md b/CLAUDE.md
index 74bb4f17..2a1c99a9 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -6,7 +6,7 @@ Not to be confused with Ethereum consensus clients AKA Beacon Chain clients AKA
 ## Quick Reference
 
 **Main branch:** `main`
-**Rust version:** 1.92.0 (edition 2024)
+**Rust version:** 1.97.1 (edition 2024)
 **Test fixtures release:** Download latest production fixtures from leanSpec releases
 
 ## Codebase Structure (12 workspace crates)
diff --git a/Cargo.toml b/Cargo.toml
index 100b1a4a..9856e46d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,7 +23,7 @@ keywords = ["ethereum", "blockchain", "consensus", "protocol"]
 license = "LICENSE"
 readme = "README.md"
 repository = "https://github.com/lambdaclass/ethlambda"
-rust-version = "1.92.0"
+rust-version = "1.97.1"
 version = "0.1.0"
 
 [workspace.dependencies]
diff --git a/Dockerfile b/Dockerfile
index 976d8314..7a012081 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 # syntax=docker.io/docker/dockerfile:1.7-labs
 
-FROM rust:1.92-bookworm AS chef
+FROM rust:1.97-bookworm AS chef
 WORKDIR /app
 
 # Install cargo-chef and system dependencies
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 1a216558..8565ca6b 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "1.92.0"
+channel = "1.97.1"
 components = ["rustfmt", "clippy"]

From f5016c048fcaa3ba918140abee8bdc27011d008a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tom=C3=A1s=20Gr=C3=BCner?=
 <47506558+MegaRedHand@users.noreply.github.com>
Date: Tue, 28 Jul 2026 11:04:40 -0300
Subject: [PATCH 2/2] docs(rpc): refresh rustc version in node identity example

The node-identity sample response still showed rustc-v1.85.0, two
toolchain bumps stale. It is illustrative rather than a pin, but a
version string that never tracks reality is worse than no version
string, so keep it current with the toolchain.
---
 docs/rpc.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/rpc.md b/docs/rpc.md
index 355d8015..fb2802a9 100644
--- a/docs/rpc.md
+++ b/docs/rpc.md
@@ -166,7 +166,7 @@ The fork-choice tree from the finalized root, with LMD-GHOST weights computed ov
 
 ```json
 {
-  "version": "ethlambda/v0.1.0-main-892ad575/x86_64-unknown-linux-gnu/rustc-v1.85.0",
+  "version": "ethlambda/v0.1.0-main-892ad575/x86_64-unknown-linux-gnu/rustc-v1.97.1",
   "peer_id": "16Uiu2HAm7v1x…"
 }
 ```